Coatings and Protection Issue 5 of 2019 Summary (II)

Coating technology
1, grinding slurry treatment municipal sludge preparation building exterior wall coating preliminary research
summary: for the municipal sludge building materials utilization, the use of PFI grinding machine for grinding treatment, as a filler to prepare the building exterior wall paint, the study of the abrasive mass concentration and abrasive speed on the municipal sludge coating system. The results show that the optimal sludge grinding conditions are: the mass concentration of the grinding slurry is 20%, the grinding plasma speed is 1500r/min, the increase of the grinding speed will reduce the viscosity of the coating, surface tensor and water penetration, but the contact angle and adhesion of the coating system has an enhanced effect, while the water resistance, alkaline resistance and hardness of the coating have no adverse effect.
keywords: municipal sludge; grinding slurry treatment; grinding pulp mass concentration; grinding speed; preparation; performance
Han Qing, Chen Guangliang, Wang Wenliang, Li Xinping (Shanxi University of Science and Technology School of Light Industry Science and Engineering, Shaanxi University of Science and Technology Light Engineering National Experimental Teaching Demonstration Center, China Light Industry Paper-based Functional Materials Key Laboratory, Shaanxi Province Paper Technology and Special Paper) Product Development Key Laboratory, Xi'an 710021)
2, the development of high-solid coatings for construction machinery
Summary: In recent years, with the introduction of the paint consumption tax and various environmental protection new policies, the state's supervision of environmental protection is increasing, how to effectively reduce VOC emissions in production and construction has become an urgent problem for paint manufacturers and use units . This paper mainly discusses the formulation design of high solid epoxy coating and high solid polyurethane coating to solve the problem of high VOC emission in the construction process of engineering machinery coating.
key words: construction machinery; high performance; high solids; VOC; epoxy; polyurethane
Wu Shihong, Li Wangping, Wang Yongtao, Zhang Yanchun, Wang Xin zhuang, Wang Shu Chuan, Hu Jianlin (Xinxin and New Materials Co., Ltd., Quanzhou, Fujian 362000)
3, a TPU substrate with two-part water-based polyurethane development
summary: for TPU substrate difficult to attach, strong elasticity Features, synthesized into a hydroxyhydrate-based water-based polyurethane emulsion, mixed evenly with isocyanate curing agent and coated on a TPU substrate, coated with adhesion 0 after 30 min of heat baking at 60 degrees C Grade (scratch test), break elongation rate of 71%, wear and tear of only 0.05g (1Kg weight, 100 r/min), butyl ketone wipe 100 times coating without scratches.
Keywords: TPU; Water-based polyurethane; Coatings
Shi Weijun (CNOOC Changzhou Environmental Protection Coatings Co., Ltd., Changzhou, Jiangsu 213012)
Coating process
4, application and analysis of flame treatment in automotive bumper skin coating
Summary: A brief introduction to the pretreaplasion process in automotive bumper paint coating - flame treatment, action, process, surface strength and surface energy and failure analysis.
key words: bumper; PP-EPDM; flame treatment; surface energy
Gu Xiaojie (SAIC-Volkswagen Co., Ltd., Shanghai 201805)
Scidal and Technology Forum
5, on artificial accelerated aging test and natural exposure test
Abstract: Cao Xiaodong, director of the environmental laboratory of the National Paint Quality Inspection Center, answered the topics of weather resistance evaluation method, common standards for aging test, natural exposure test and accelerated aging test correlation, accelerated aging technology development and so on from a professional point of view.
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